Hi all,
A friend of mine accidently erased all crontab entries by typing crontab -r.
Can anyone pls. help me on this.
Is it possible that a backup file is available other than files from the backup tape. Or is it retrievable ???
Thnx,
MK (6 Replies)
Hi!
I'm a bit noob on Unix/Linux world, so sorry any lame question i may make...
Oh.. and my english too.. is not so famous lol..
The deal is to use crontab to change my admin password every weak to something like "mypasswordcurrrentday" that is... i want evey weak to change my password but... (2 Replies)
Hey guys
Just need some help with crontab.Iam looking for a script that will alert particular user about its change through sendmail.We are using bash here.
--CoolKid (3 Replies)
hi guys. can someone tell me what will happen if there are two identical crontab entry for an application. For example
03 23 * * 1 /usr/vt/crondemo
03 23 * * 1 /usr/vt/crondemo
will the file crondemo run twice, once or wont run at all?? (2 Replies)
Hi All,
I have scheduled a script to run every five minutes through crontab. If there is any issue with the script which may need manual intervention, I have used the mailx commands. But at the same time, I would want the cron to be disabled until the issue is resolved. Once things are fine,... (2 Replies)
Hi friends,
Actually i wrote many scripts in korn shell for time saving activity in storage domain. But every week i am spending some time for the running of script. So every Monday i wants to run my scripts automatically. So corn will be helpful according to my friend's opinion.
But I don't... (5 Replies)
I have created a shell script "abcd.sh" and script should run after every 10 min., For that I will create below entry in the crontab file by using command crontab -e
*/10 * * * * /cdr/work/proc_raw/abcd.sh >> /dev/null 2>&1
I wish to know whether above entry is correct or I have to make entry... (2 Replies)
Hi,
We are currently running AIX 6.1 TL4. There are around 30 ksh scripts that are ran from crontab which if an error occurs or a problem with an ftp unix sends the out of the ksh script which goest to our console via the local user hci which is viewed by the mail command. I've tired adding... (2 Replies)
How to edit crontab entries .
A job is scheduled as
35 15 * * * it.sh rahul_raj/hdhd
i want to change it as
45 15 * * * it.sh rahul_raj/hdhd
1.crontab -e
2.shift+g ---go to last line .press enter.Press <i> .
After this what should i do? (6 Replies)
Hi,
1. How can I list all the crontab entries of all system users (like root, adm, sys etc.) as we have multiple files like /etc/crontab , /var/spool/cron, /etc/cron.d, /etc/cron.daily, /etc/cron.hourly, /etc/cron.monthly etc.
2. How can I list all the crontab entries of ALL users on a... (1 Reply)
Discussion started by: prvnrk
1 Replies
LEARN ABOUT FREEBSD
crontab
CRONTAB(1) BSD General Commands Manual CRONTAB(1)NAME
crontab -- maintain crontab files for individual users (V3)
SYNOPSIS
crontab [-u user] file
crontab [-u user] { -l | -r | -e }
DESCRIPTION
The crontab utility is the program used to install, deinstall or list the tables used to drive the cron(8) daemon in Vixie Cron. Each user
can have their own crontab, and though these are files in /var, they are not intended to be edited directly.
If the allow file exists, then you must be listed therein in order to be allowed to use this command. If the allow file does not exist but
the deny file does exist, then you must not be listed in the deny file in order to use this command. If neither of these files exists, then
depending on site-dependent configuration parameters, only the super user will be allowed to use this command, or all users will be able to
use this command. The format of these files is one username per line, with no leading or trailing whitespace. Lines of other formats will
be ignored, and so can be used for comments.
The first form of this command is used to install a new crontab from some named file or standard input if the pseudo-filename '-' is given.
The following options are available:
-u Specify the name of the user whose crontab is to be tweaked. If this option is not given, crontab examines ``your'' crontab, i.e.,
the crontab of the person executing the command. Note that su(1) can confuse crontab and that if you are running inside of su(1) you
should always use the -u option for safety's sake.
-l Display the current crontab on standard output.
-r Remove the current crontab.
-e Edit the current crontab using the editor specified by the VISUAL or EDITOR environment variables. The specified editor must edit
the file in place; any editor that unlinks the file and recreates it cannot be used. After you exit from the editor, the modified
crontab will be installed automatically.
FILES
/var/cron/allow List of users allowed to use crontab
/var/cron/deny List of users prohibited from using crontab
/var/cron/tabs Directory for personal crontab files
DIAGNOSTICS
A fairly informative usage message appears if you run it with a bad command line.
SEE ALSO crontab(5), cron(8)STANDARDS
The crontab command conforms to IEEE Std 1003.2 (``POSIX.2'') with the exception that the dangerous variant of calling crontab without a file
name in the first form of the command is not allowed by this implementation. The pseudo-filename '-' must be specified to read from standard
input. The new command syntax differs from previous versions of Vixie Cron, as well as from the classic SVR3 syntax.
AUTHORS
Paul Vixie <paul@vix.com>
BSD May 13, 2010 BSD